FOCAL: Contrastive Learning for Multimodal Time-Series Sensing Signals in Factorized Orthogonal Latent Space - Liu, Shengzhong; Kimura, Tomoyoshi; Liu, Dongxin; Wang, Ruijie; Li, Jinyang; Diggavi, Suhas; Srivastava, Mani; Abdelzaher, Tarek (Advances in Neural Information Processing Systems, 2023)